Go with book binders tape as its probably more durable in the long run.
Gaffers tape will dry out in 7 to 8 years in a moderate humidity climate so in the desert it will probably not last as long._________________The best camera ever made is the one that YOU enjoy using and produces the image quality that satifies YOU.

Remove it.
Use http://www.lowes.com/pd_16685-11743-407-45_0__?productId=3015285&Ntt=liftoff , motsenbockers liftoff adhesive remover, and remove the old tape and residue.
Goof Off is toxic, must be used in a well ventilated area;
Goo Gone leaves an oily residue that is hard to remove:
Krud kutter does not work as well but is better than nothing._________________The best camera ever made is the one that YOU enjoy using and produces the image quality that satifies YOU.